<?php

/**
 * Zend Framework
 *
 * LICENSE
 *
 * This source file is subject to the new BSD license that is bundled
 * with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://framework.zend.com/license/new-bsd
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@zend.com so we can send you a copy immediately.
 *
 * @category   Zend
 * @package    Zend_Gdata
 * @subpackage App
 * @version    $Id: LoggingHttpClientAdapterSocket.php 18951 2009-11-12 16:26:19Z alexander $
 * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 */

/**
 * @see Zend_Http_Client_Adapter_Socket
 */
require_once 'Zend/Http/Client/Adapter/Socket.php';

/**
 * Overrides the traditional socket-based adapter class for Zend_Http_Client to
 * enable logging of requests.  All requests are logged to a location specified
 * in the config as $config['logfile'].  Requests and responses are logged after
 * they are sent and received/processed, thus an error could prevent logging.
 *
 * @category   Zend
 * @package    Zend_Gdata
 * @subpackage App
 * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 */
class Zend_Gdata_App_LoggingHttpClientAdapterSocket extends Zend_Http_Client_Adapter_Socket
{

	/**
	 * The file handle for writing logs
	 *
	 * @var resource|null
	 */
	protected $log_handle = null;

	/**
	 * Log the given message to the log file.  The log file is configured
	 * as the config param 'logfile'.  This method opens the file for
	 * writing if necessary.
	 *
	 * @param string $message The message to log
	 */
	protected function log($message)
	{
		if ($this->log_handle == null) {
			$this->log_handle = fopen($this->config['logfile'], 'a');
		}
		fwrite($this->log_handle, $message);
	}

	/**
	 * Connect to the remote server
	 *
	 * @param string  $host
	 * @param int     $port
	 * @param boolean $secure
	 * @param int     $timeout
	 */
	public function connect($host, $port = 80, $secure = false)
	{
		$this->log("Connecting to: ${host}:${port}");
		return parent::connect($host, $port, $secure);
    }

    /**
     * Send request to the remote server
     *
     * @param string        $method
     * @param Zend_Uri_Http $uri
     * @param string        $http_ver
     * @param array         $headers
     * @param string        $body
     * @return string Request as string
     */
    public function write($method, $uri, $http_ver = '1.1', $headers = array(), $body = '')
    {
    	$request = parent::write($method, $uri, $http_ver, $headers, $body);
    	$this->log("\n\n" . $request);
    	return $request;
    }

    /**
     * Read response from server
     *
     * @return string
     */
    public function read()
    {
    	$response = parent::read();
    	$this->log("${response}\n\n");
    	return $response;
    }

    /**
     * Close the connection to the server
     *
     */
    public function close()
    {
    	$this->log("Closing socket\n\n");
    	parent::close();
    }

}
